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@(#)du.1 8.2 (Berkeley) 4/1/94
$FreeBSD: head/usr.bin/du/du.1 176561 2008-02-25 19:06:43Z keramida $
.Dd February 25, 2008 .Dt DU 1 .Os .Sh NAME .Nm du .Nd display disk usage statistics .Sh SYNOPSIS .Nm .Op Fl H | L | P .Op Fl a | s | d Ar depth .Op Fl c .Op Fl l .Op Fl h | k | m .Op Fl n .Op Fl x .Op Fl I Ar mask .Op Ar .Sh DESCRIPTION The .Nm utility displays the file system block usage for each file argument and for each directory in the file hierarchy rooted in each directory argument. If no file is specified, the block usage of the hierarchy rooted in the current directory is displayed.
p The options are as follows: l -tag -width indent t Fl H Symbolic links on the command line are followed, symbolic links in file hierarchies are not followed. t Fl L Symbolic links on the command line and in file hierarchies are followed. t Fl I Ar mask Ignore files and directories matching the specified .Ar mask . t Fl P No symbolic links are followed. This is the default. t Fl a Display an entry for each file in a file hierarchy. t Fl h "Human-readable" output. Use unit suffixes: Byte, Kilobyte, Megabyte, Gigabyte, Terabyte and Petabyte. t Fl r Generate messages about directories that cannot be read, files that cannot be opened, and so on. This is the default case. This option exists solely for conformance with .St -xpg4 . t Fl s Display an entry for each specified file. (Equivalent to .Fl d Li 0 ) t Fl d Ar depth Display an entry for all files and directories .Ar depth directories deep. t Fl c Display a grand total. t Fl k Display block counts in 1024-byte (1-Kbyte) blocks. t Fl l If a file has multiple hard links, count its size many times. The default behavior of .Nm is to count files with multiple hard links only once. When the .Fl l option is specified, the hard link checks are disabled, and these files are counted (and displayed) as many times as they are found. t Fl m Display block counts in 1048576-byte (1-Mbyte) blocks. t Fl n Ignore files and directories with user .Dq nodump flag
q Dv UF_NODUMP set. t Fl x File system mount points are not traversed. .El
p The .Nm utility counts the storage used by symbolic links and not the files they reference unless the .Fl H or .Fl L option is specified. If either the .Fl H or .Fl L options are specified, storage used by any symbolic links which are followed is not counted or displayed. .Sh ENVIRONMENT l -tag -width BLOCKSIZE t Ev BLOCKSIZE If the environment variable .Ev BLOCKSIZE is set, and the .Fl k option is not specified, the block counts will be displayed in units of that size block. If .Ev BLOCKSIZE is not set, and the .Fl k option is not specified, the block counts will be displayed in 512-byte blocks. .El .Sh SEE ALSO .Xr df 1 , .Xr chflags 2 , .Xr fts 3 , .Xr symlink 7 , .Xr quot 8 .Sh HISTORY A .Nm command appeared in .At v1 .